MS21921-8D
Military Standard Tube Coupling Nut
tube outside diameter: 1/2", aluminum alloy, sleeve coupling flareless






MS21921-8D Datasheet Features and Specification
Quick Specs
Thread Size | 3/4 |
Thread Qty | 16 |
Thread Series | UNJF |
Thread Class | 3B |
Material | Aluminum |
Additional Information
Alternate Part Numbers
SKU / Model: | MS219218D |
NSN: | 4730-01-087-7557 |
FSC: | Hose, Pipe, Tube, Lubrication, and Railing Fittings / 4730 |
Product Series: | MS21921 |
Pack Weight (Approx.) | 0.128 lb |
Minimum Qty (MOQ): | 5 |
ECCN: | EAR99 |
National Motor Freight: | 013540, Alum Nuts |
Download PDF Version MS21921-8D_Military-Fasteners-com.pdf |
|
![]() ![]() |
* report an issue on this page
Frequently bought together
Other customers frequently bought these along with MS21921-8D

MS21922-8
Clinch Tube Fitting Sleeve
in Fittings
tube outside diameter: 1/2", coupling, flareless, carbon steel, MS21922 series sleeve
More MS21921 tube coupling nuts
Corrosion resistant steel (15-5ph), cadmium plated, tube outside 1/2in., nut, sleeve coupling flareless
tube outside 5/16", nut, sleeve coupling flareless - corrosion resistant steel - cadmium plated "
Carbon steel tube outside 1/4in., nut, sleeve coupling flareless
$83.94 Each, Corrosion resistant steel cadmium plated, tube outside 5/8in., nut, sleeve coupling flareless
$15.30 Each, Aluminum alloy 7075, tube outer diameter 1/2in., nut, sleeve coupling, flareless
4730-00-777-7248 Tube Coupling Nut
Product Image Gallery
Product code MS21921-8D





Have a question
If you require a quote on this or any product please visit our quote request page »
Browse our frequently asked questions page.
You may contact us by phone at +1 (904) 543-6395 or
email us using our contact form.
Our hours of operation are 8:00am - 6:00pm EST
Customer Reviews

The customer service from Trisha Hawkins at Military Fasteners was exceptional.
Tanks for the fantastic service. I ordered over the new year period and was amazed my shipment arrived so fast, all the way to New Zealand. Less than a week and that included clearing Customs. Awesome!!
Received the ELT Battery on time and at a price that I expected. I use Military Fasteners for all my aviation part and accessories needs.
I always enjoy buying parts from you. Your service and delivery are great and the customer service folks are terrific. Thank you.
Please complete this form if you're having an issue with ordering this item or this item displays invalid or innacurate information or specifications. We thank you for taking the time to report issues so that we may better serve you.